1// -*- C++ -*-
  2//===----------------------------------------------------------------------===//
  3//
  4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
  5// See https://llvm.org/LICENSE.txt for license information.
  6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
  7//
  8//===----------------------------------------------------------------------===//
  9
 10#ifndef _LIBCPP_CSTRING
 11#define _LIBCPP_CSTRING
 12
 13/*
 14    cstring synopsis
 15
 16Macros:
 17
 18    NULL
 19
 20namespace std
 21{
 22
 23Types:
 24
 25    size_t
 26
 27void* memcpy(void* restrict s1, const void* restrict s2, size_t n);
 28void* memmove(void* s1, const void* s2, size_t n);
 29char* strcpy (char* restrict s1, const char* restrict s2);
 30char* strncpy(char* restrict s1, const char* restrict s2, size_t n);
 31char* strcat (char* restrict s1, const char* restrict s2);
 32char* strncat(char* restrict s1, const char* restrict s2, size_t n);
 33int memcmp(const void* s1, const void* s2, size_t n);
 34int strcmp (const char* s1, const char* s2);
 35int strncmp(const char* s1, const char* s2, size_t n);
 36int strcoll(const char* s1, const char* s2);
 37size_t strxfrm(char* restrict s1, const char* restrict s2, size_t n);
 38const void* memchr(const void* s, int c, size_t n);
 39      void* memchr(      void* s, int c, size_t n);
 40const char* strchr(const char* s, int c);
 41      char* strchr(      char* s, int c);
 42size_t strcspn(const char* s1, const char* s2);
 43const char* strpbrk(const char* s1, const char* s2);
 44      char* strpbrk(      char* s1, const char* s2);
 45const char* strrchr(const char* s, int c);
 46      char* strrchr(      char* s, int c);
 47size_t strspn(const char* s1, const char* s2);
 48const char* strstr(const char* s1, const char* s2);
 49      char* strstr(      char* s1, const char* s2);
 50char* strtok(char* restrict s1, const char* restrict s2);
 51void* memset(void* s, int c, size_t n);
 52char* strerror(int errnum);
 53size_t strlen(const char* s);
 54
 55}  // std
 56
 57*/
 58
 59#if __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
 60#  include <__cxx03/cstring>
 61#else
 62#  include <__config>
 63#  include <__cstddef/size_t.h>
 64#  include <__type_traits/is_constant_evaluated.h>
 65
 66#  include <string.h>
 67
 68#  ifndef _LIBCPP_STRING_H
 69#   error <cstring> tried including <string.h> but didn't find libc++'s <string.h> header. \
 70          This usually means that your header search paths are not configured properly. \
 71          The header search paths should contain the C++ Standard Library headers before \
 72          any C Standard Library, and you are probably using compiler flags that make that \
 73          not be the case.
 74#  endif
 75
 76#  if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
 77#    pragma GCC system_header
 78#  endif
 79
 80_LIBCPP_BEGIN_NAMESPACE_STD
 81
 82using ::memcpy _LIBCPP_USING_IF_EXISTS;
 83using ::memmove _LIBCPP_USING_IF_EXISTS;
 84using ::strcpy _LIBCPP_USING_IF_EXISTS;
 85using ::strncpy _LIBCPP_USING_IF_EXISTS;
 86using ::strcat _LIBCPP_USING_IF_EXISTS;
 87using ::strncat _LIBCPP_USING_IF_EXISTS;
 88using ::memcmp _LIBCPP_USING_IF_EXISTS;
 89using ::strcmp _LIBCPP_USING_IF_EXISTS;
 90using ::strncmp _LIBCPP_USING_IF_EXISTS;
 91using ::strcoll _LIBCPP_USING_IF_EXISTS;
 92using ::strxfrm _LIBCPP_USING_IF_EXISTS;
 93using ::memchr _LIBCPP_USING_IF_EXISTS;
 94using ::strchr _LIBCPP_USING_IF_EXISTS;
 95using ::strcspn _LIBCPP_USING_IF_EXISTS;
 96using ::strpbrk _LIBCPP_USING_IF_EXISTS;
 97using ::strrchr _LIBCPP_USING_IF_EXISTS;
 98using ::strspn _LIBCPP_USING_IF_EXISTS;
 99using ::strstr _LIBCPP_USING_IF_EXISTS;
100using ::strtok _LIBCPP_USING_IF_EXISTS;
101using ::memset _LIBCPP_USING_IF_EXISTS;
102using ::strerror _LIBCPP_USING_IF_EXISTS;
103using ::strlen _LIBCPP_USING_IF_EXISTS;
104
105_LIBCPP_END_NAMESPACE_STD
106
107#endif // __cplusplus < 201103L && defined(_LIBCPP_USE_FROZEN_CXX03_HEADERS)
108
109#endif // _LIBCPP_CSTRING